Are these balanced or unbalanced??? 10. KOH + HBr -> kBr + H2O
Balanced
Unbalanced

11.2KCI -> K+ Cl2
Balanced
Unbalanced

12. Zn + HCl -> ZnCl2 + H2*
Balanced
Unbalanced

13.2H2O -> 2H2 + O2 *
Balanced
Unbalanced

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6